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Statistical evaluation of PCM plaster lining impact on indoor temperature fluctuation due to variability of outdoor temperature and solar radiation along a whole spring season
Journal of Building Engineering ( IF 6.7 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.jobe.2024.111626 Monika Ferencz, Bence Nemeth, Janos Gyenis, Tivadar Feczko
Journal of Building Engineering ( IF 6.7 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.jobe.2024.111626 Monika Ferencz, Bence Nemeth, Janos Gyenis, Tivadar Feczko
In lightweight buildings, internal temperatures are strongly influenced by external factors, such as fluctuating outdoor temperatures, and solar radiation, particularly during spring and autumn when operated without heating or cooling. Previous studies often relied on measurements over arbitrarily chosen short periods with limited consideration for varying external temperatures or solar radiation effects, leading to conclusions of limited reliability. This paper aims to address these gaps by analyzing data over a full season and applying statistical approach to yield more sophisticated findings. The purpose was to demonstrate that PCM microcapsules applied in the plaster lining of a lightweight construction model house has high efficiency to reduce temperature extremes during a spring season. As a key contribution, Poincaré’s method was utilized for the statistical analysis of the data, with results represented in 3D diagrams as a function of instantaneous outdoor temperatures and solar radiation. The average daily amplitude of temperature fluctuation was 6.3 °C in the reference house and only 3.6 °C in the house equipped with PCM plaster. At low temperatures in the morning, the previously stored heat is retained by the PCM, thereby reducing the extent of cooling down inside the house. During the daily periods of high outdoor temperatures and intense solar radiation, PCM plaster reduces strong indoor warming. Thus, by providing more comfortable indoor conditions throughout transitional periods such as spring with minimal or no need for supplemental heating or cooling, the application of PCM plasters results in 42.9 % energy savings in this calculation.
中文翻译:
相变材料石膏衬垫对室内温度波动影响的统计评价
在轻型建筑中,内部温度受到外部因素的强烈影响,例如室外温度的波动和太阳辐射,尤其是在春季和秋季在没有加热或冷却的情况下运行。以前的研究通常依赖于任意选择的短期测量,而对变化的外部温度或太阳辐射效应的考虑有限,导致结论的可靠性有限。本文旨在通过分析整个赛季的数据并应用统计方法来产生更复杂的结果,从而消除这些差距。目的是证明应用于轻型结构样板房的石膏衬里的 PCM 微胶囊在春季期间具有很高的效率,可以降低极端温度。作为一项关键贡献,Poincaré 的方法被用于数据的统计分析,结果以 3D 图表表示为瞬时室外温度和太阳辐射的函数。参考房的平均日温度波动幅度为 6.3 °C,而配备 PCM 石膏的房仅 3.6 °C。在早晨的低温下,先前储存的热量被 PCM 保留,从而减少了室内的冷却程度。在室外高温和强烈太阳辐射的日常期间,相变材料膏药可以减少室内强烈的变暖。因此,通过在春季等过渡时期提供更舒适的室内条件,并且几乎不需要额外的加热或冷却,PCM 抹灰的应用在该计算中可节省 42.9% 的能源。
更新日期:2024-12-19
中文翻译:
相变材料石膏衬垫对室内温度波动影响的统计评价
在轻型建筑中,内部温度受到外部因素的强烈影响,例如室外温度的波动和太阳辐射,尤其是在春季和秋季在没有加热或冷却的情况下运行。以前的研究通常依赖于任意选择的短期测量,而对变化的外部温度或太阳辐射效应的考虑有限,导致结论的可靠性有限。本文旨在通过分析整个赛季的数据并应用统计方法来产生更复杂的结果,从而消除这些差距。目的是证明应用于轻型结构样板房的石膏衬里的 PCM 微胶囊在春季期间具有很高的效率,可以降低极端温度。作为一项关键贡献,Poincaré 的方法被用于数据的统计分析,结果以 3D 图表表示为瞬时室外温度和太阳辐射的函数。参考房的平均日温度波动幅度为 6.3 °C,而配备 PCM 石膏的房仅 3.6 °C。在早晨的低温下,先前储存的热量被 PCM 保留,从而减少了室内的冷却程度。在室外高温和强烈太阳辐射的日常期间,相变材料膏药可以减少室内强烈的变暖。因此,通过在春季等过渡时期提供更舒适的室内条件,并且几乎不需要额外的加热或冷却,PCM 抹灰的应用在该计算中可节省 42.9% 的能源。